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[mass noun] A colourless syrupy liquid organic acid found in rancid butter and in arnica oil.
- ‘He named these materials and some of these names, like stearic acid and butyric acid, are still used today.’
- ‘The name comes from butyric acid, an acid that has the smell of rancid butter.’
- ‘The culture supernatants were analysed and butyric acid identified as the potentially toxic material.’
- ‘A variety of other organic acids are produced by other bacteria, including butyric acid, responsible for the taste of rancid butter.’
- ‘Undigested lactose fermented by bacteria creates lactic acid in the stool and other short chain fatty acids such as butyric acid.’
Mid 19th century: butyric from Latin butyrum (see butter)+ -ic.
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